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SAE AIR1093 Revision A, April 1, 2002
Numeral, Letter and Symbol Dimensions for Aircraft Instrument Displays
Description / Abstract:
The purpose of this AIR is to provide recommendations for the
minimum dimensions of characters and symbols used in aircraft
instrument dials and panel displays as related to the conditions
stated in para. 3.
Numerous variables influence the legibility of aircraft instrument dial characters. This situation makes it very difficult, if not impossible, to establish an exact act of rules for optimizing all installations.
Character size, one of the important considerations, can be optimized where adequate dial space exists. Usually this is not the case and the designer is faced with placing the information in a limited space while continuing to strive for error-free legibility. Appropriate minimum size requirements have been stated herein for guidance in air transport use.
Numerous variables influence the legibility of aircraft instrument dial characters. This situation makes it very difficult, if not impossible, to establish an exact act of rules for optimizing all installations.
Character size, one of the important considerations, can be optimized where adequate dial space exists. Usually this is not the case and the designer is faced with placing the information in a limited space while continuing to strive for error-free legibility. Appropriate minimum size requirements have been stated herein for guidance in air transport use.
SAE AIR1093 Revision A, April 1, 2002
Numeral, Letter and Symbol Dimensions for Aircraft Instrument Displays